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Old October 3rd, 2008, 07:50 PM   #10621
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Quote:
Originally Posted by Ember-To-Ashes View Post
If each floor is est. 6m and u can see that 3 of the crane peices fit into that 6m, that would make each crane peice est. 2m. Dont know why you think its 4m =S
Ember, see L156 on this pic. >>click here<< Each level is 6.4m high, and 2 pieces of crane mast are taller than one steel level is - because they are 4m long If you dont belive me, ask Fury
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Old October 3rd, 2008, 08:13 PM   #10622
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Quote:
Originally Posted by BlackSmith! View Post
Ember, see L156 on this pic. >>click here<< Each level is 6.4m high, and 2 pieces of crane mast are taller than one steel level is - because they are 4m long If you dont belive me, ask Fury
Looking at your picture there are definitely more than two sections of the crane tower for each level but less than three sections. That would put the height of each section between 2.5m and 3.0m.
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Old October 3rd, 2008, 08:14 PM   #10623
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Quote:
Originally Posted by Ember-To-Ashes View Post
If each floor is est. 6m and u can see that 3 of the crane peices fit into that 6m, that would make each crane peice est. 2m. Dont know why you think its 4m =S
Hi Ember.

The piece we see being lowered in OTRs' pic is one section of the mast made up of 2 - 2.000 m. segments. Each section of the mast is 4.000 m. high.

Here is a repost of something I cooked up a few months ago.

[IMG]http://i37.************/zn61hj.jpg[/IMG]

About the taking down of the mast sections - 2 things come to mind ;

1 - The design for bolting the sections together may not be able to hold up more sections under the one that is slung.

2 - The bolting design may not take multiple sections being lifted sideways.

Just thoughts as I don't know much about crane masts - perhaps abc could chime in. The other thing is maybe on the ground they don't want to deal with bigger pieces ?

Great shots as always OTR and Dennis.

OTR that spire piece is probably scared to move for fear of being photographed - way to keep us in the loop.

I thought that small "mast" on the blue recovery crane looked too small a few days ago. The real mast looks more up to the challenge. After that blue one takes down the big crane (in a few months) a smaller crane will be erected to take the blue one down. Then the small one will go down in an elevator.

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Last edited by Fury; October 3rd, 2008 at 08:20 PM.
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Old October 3rd, 2008, 08:21 PM   #10624
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I admire the courage of the people working up there....!
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Old October 3rd, 2008, 09:36 PM   #10625
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Ah yes i see where i went wrong there. wasnt looking properly =)

Still gonna take some time ti dismantle all of that. hope it doesnt disrupt the height construction too much
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Old October 3rd, 2008, 09:39 PM   #10626
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Hi all.

Here is a pic from 06 06 01 showing the size of the crane mast sections.

[IMG]http://i36.************/2pos7cl.jpg[/IMG]

The red part is one section made up of 2 - 2.000 m. segments.

Another thought - I wonder how heavy the sections are ? Maybe 2 sections are more than the crane can handle ?

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Old October 3rd, 2008, 10:02 PM   #10627
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Hi all

Flickr - Rudi Poletto - 08 09 29

[IMG]http://i38.************/14wzr5l.jpg[/IMG]

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Old October 3rd, 2008, 10:29 PM   #10628
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how far down does the spire go in that latest picture please ?
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Old October 3rd, 2008, 11:50 PM   #10629
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Nice arieal pic!
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Old October 3rd, 2008, 11:52 PM   #10630
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Quote:
Originally Posted by Fury View Post
Hi all

Flickr - Rudi Poletto - 08 09 29

[IMG]http://i38.************/14wzr5l.jpg[/IMG]

You can easily recognize the Burj Dubai in that picture! Nice shot!!
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Old October 3rd, 2008, 11:58 PM   #10631
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You can see the index too
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Old October 4th, 2008, 12:59 AM   #10632
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Quote:
Originally Posted by Dequal View Post
You can easily recognize the Burj Dubai in that picture! Nice shot!!
Quote:
Originally Posted by Captain Kimo View Post
You can see the index too
that photo is amazing

yes we can see burj dubai but nothing more than a thin needle and looks so small. The index is much more eye catching though, probaly because its wider.

I think the top 2 steel floors will progress slow for a while, the highest crane's just busy dismantling his brother.
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Old October 4th, 2008, 03:54 AM   #10633
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where ??

Quote:
Originally Posted by buildmilehightower View Post
that photo is amazing

yes we can see burj dubai but nothing more than a thin needle and looks so small. The index is much more eye catching though, probaly because its wider.

I think the top 2 steel floors will progress slow for a while, the highest crane's just busy dismantling his brother.
sorry i can see the tower can somebody indicate where is
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Old October 4th, 2008, 05:04 AM   #10634
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Hi all.

Once the main crane gets the other mast down enough perhaps the recovery crane could finish the job freeing up the main crane - if the recovery can handle the weight.


The more I study the lifting proceedure we have the more I can't wait to see how they do it. It seems some things so far are not following that plan exactly.

[IMG]http://i34.************/5tyhyd.jpg[/IMG]

- It shows an opening on the oposite side from the main crane as part of the spire void. Thing is they have cladded there.

- It shows a loading stage at the start of tier 16 where the opening is supposed to be. A platform sticking out from the side of the structure. None there but I guess they could put it up later.

- It shows a temp. working stage at the start of tier 19. Again a platform sticking out - none there (yet ?).

- It shows the top of the crane mast at the start of tier 21. Right now it is 2 crane mast sections (8 m.) above the start of tier 22. Hmmmmm.

- It shows the one big wing of tier 20 to be built after jacking. It is already built as are all 3 wings of tier 21 and 1 of the 2 wings of tier 22 (2 sections so far). Being the crane is higher than the plan I guess they will build the other wing of tier 22 and the 1 wing of tier 23 after jacking ?

- It shows the total lifting height at 112.0 m. from the concrete to part way up section 21B. The top of the lifting wheels we saw going in are part way up section 21B so that is to plan.

- It shows the primary lifting block of 110.3 m. from part way up section 21B to the top of the structure. This will probably be the case (?)

-It shows a secondary lifting block of 76.3 m. and 3 attachment blocks of 57.6 m. The attachment blocks are the wings that extend up to tiers 21, 22, and 23. I'm can't tell if they were to be attached before or after jacking in the plan but all of one, all but 3 sections of another, and all but 4 sections of the other are in place now.



Anyway looking closer at the jacking plan and the revised schedule there appears to be more like 6 jacking stages for a total of 112.0 m. I have been saying 2 stages of ~ 60 m. but I don't think that is correct. I still don't really know one way or the other as it all comes down to interpreting a plan drawing that doesn't lay it out in black and white and is well over a year old to boot. Here is part of the revised schedule showing 6 stages.

[IMG]http://i34.************/13yl4py.jpg[/IMG]

The apparent lack of an opening somewhere just above the concrete is disconcerting. They could always take a brace out when needed - perhaps they wanted it in place while erecting and welding the levels or sections above. The plan no matter how they may change it requires an opening so they have a way to get materials in so they can add to the bottom of what is already jacked. I can't see any other way to carry out the jacking plan.

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Old October 4th, 2008, 08:40 AM   #10635
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Quote:
Originally Posted by Fury View Post
Hi all.

Here is a pic from 06 06 01 showing the size of the crane mast sections.

[IMG]http://i36.************/2pos7cl.jpg[/IMG]

The red part is one section made up of 2 - 2.000 m. segments.

Another thought - I wonder how heavy the sections are ? Maybe 2 sections are more than the crane can handle ?

These are different sections to the ones in use at the moment.. not as wide.. about half a metre not as wide.. These were used when the cranes climbed through the lift shafts... As for lifting just one section in the other photo.. It could lift down more.. but there could be a couple of factors.. the sections that are left were near a collar.. they might wanted to have used the sections as a base while they removed the collar.. And wind at that height is also a factor.. plus it would be taking almost 2 minutes to get a load down safely... It's interesting to note that this crane is 7 sections above it's last brace, and not the normal five they have used.. she'd be a rocking and rolling in the wind.
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Old October 4th, 2008, 10:36 AM   #10636
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Update this morning

Started steelwork on other side of this tier, also looks as though crane has been extended.

[IMG]http://i37.************/14blriw.jpg[/IMG]

[IMG]http://i36.************/aewgw4.jpg[/IMG]

[IMG]http://i35.************/2mpx4ar.jpg[/IMG]
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Old October 4th, 2008, 11:34 AM   #10637
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It's like they are making two floors, but without the core, just the outside steel. So that would be a hole maybe for the jacking things of the spire?
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Old October 4th, 2008, 12:36 PM   #10638
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This ladder on the right pillar looks... frightening
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Old October 4th, 2008, 12:44 PM   #10639
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those 2 men working on scaffolding must have massive livers, they have to get down on the ladder right on the edge of the floor.
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Old October 4th, 2008, 01:02 PM   #10640
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you mean 3...
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adrian smith, burj dubai, burj khalifa, downtown, dubai, dubai tower, emaar, megatall, middle east, rascacielos, sarajevo construction, skyscraper, spire, tallest, uae

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